CN114195222A - Solid settling device and solid settling method - Google Patents

Abstract

The invention discloses a solid settling device which comprises a container and two vibrating devices, wherein the container is provided with a containing cavity for containing wastewater, the container is provided with a water inlet and a water outlet, and the water inlet is communicated with the water outlet through the containing cavity; the two vibration devices are respectively arranged on two opposite sides of the container and are used for generating standing waves in the wastewater in the cavity so as to enable solid matters in the wastewater to move along with the standing waves to realize sedimentation. The invention also discloses a solid settling method. The wastewater treated by the invention can automatically flow, can effectively separate solid matters such as sludge, floc and the like, and is beneficial to reducing the water treatment cost and energy consumption.

Description

Solid settling device and solid settling method

Technical Field

The invention relates to a water treatment technology, in particular to a solid settling device and a solid settling method.

Background

At present, the separation method of waste water containing solid substances such as sludge, floc and the like is generally realized by utilizing equipment such as a bag filter, a cartridge filter, a sand filter tank and the like, and the method has the defects that a water pump needs to be additionally added, the parts of the bag filter and the cartridge filter need to be replaced at regular intervals, and the sand filter tank needs to be backwashed or replace sand at regular intervals, so the water treatment cost and the energy consumption are higher.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a solid settling device, the treated wastewater can automatically flow, the solids such as sludge and floc can be effectively separated, and the water treatment cost and the energy consumption can be reduced.

The second purpose of the invention is to provide a solid settling method.

One of the purposes of the invention is realized by adopting the following technical scheme:

a solids settling device comprising:

the container is provided with a containing cavity for containing wastewater, the container is provided with a water inlet and a water outlet, and the water inlet is communicated with the water outlet through the containing cavity;

the two vibration devices are respectively arranged on two opposite sides of the container and are used for generating standing waves in the wastewater in the accommodating cavity.

Furthermore, at least one of the vibrating devices is movably arranged in the containing cavity of the container and can move towards the direction close to or away from the other vibrating device so as to adjust the distance between the two vibrating devices.

The vibration device comprises a container, and is characterized by further comprising a water-stop device movably arranged in the containing cavity of the container, wherein a water-stop groove is arranged on the water-stop device and used for containing the vibration device in the containing cavity of the container.

The vibration device is characterized by further comprising a guide piece, wherein the guide piece is arranged in the containing cavity of the container, and the vibration device positioned in the containing cavity of the container is movably connected with the guide piece so as to adjust the distance between the two vibration devices.

Furthermore, the vibration device is positioned in the containing cavity of the container, and the distance between the two vibration devices can be adjusted by connecting the limiting part and the guide piece through threads.

Further, the horizontal height of the water outlet is larger than that of the water inlet.

Further, a sound-proofing means is included for covering the surface of the container and/or each vibration device.

Further, each of the vibration devices is an ultrasonic transducer.

Furthermore, the ultrasonic transducer comprises a high-voltage booster, a power amplifier and an ultrasonic generator, wherein each ultrasonic transducer is respectively and electrically connected with the high-voltage booster, the power amplifier and the ultrasonic generator in sequence.

The second purpose of the invention is realized by adopting the following technical scheme:

a method of solids settling comprising the steps of:

1) preparing a wastewater sample;

2) forming a wastewater sample into a water flow flowing in one direction;

3) standing waves are generated in water flow, when solid in the wastewater sample passes through a standing wave area, the solid can stay at a node antinode of the standing waves, and the solid can realize sedimentation along with the wave motion of the standing waves.

Compared with the prior art, the invention has the beneficial effects that:

the waste water can enter the containing cavity from the water inlet of the container and flow out from the water outlet, and the self-flow of the waste water can be realized. The two vibrating devices are started to generate two lines of waves with the same frequency, amplitude and vibration directions and the opposite propagation directions, the two lines of waves are intersected to form standing waves, when wastewater flows through standing waves generated by the two vibrating devices, solid matters in the wastewater can stay at node antinodes of the standing waves, and the solid matters are settled along with the wave motion of the standing waves, so that the continuous separation of the solid matters such as sludge, flocs and the like can be realized, and the reduction of water treatment cost and energy consumption is facilitated.

Drawings

FIG. 1 is a schematic view of a partial structure of a solids settling device in a preferred embodiment of the present invention;

fig. 2 is a schematic structural view of a solids settling device in a preferred embodiment of the present invention.

In the figure: 1. a container; 2. a water inlet pipe; 3. a water outlet pipe; 4. a water isolation device; 5. a screw; 6. a nut; 7. an ultrasonic transducer; 8. a high voltage booster; 9. a power amplifier; 10. an ultrasonic generator.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a solid settling device, including a container 1 and two vibrating devices, wherein the container 1 is provided with a cavity for containing wastewater, the container 1 is provided with a water inlet and a water outlet, and the water inlet is communicated with the water outlet through the cavity; the two vibration devices are respectively arranged on two opposite sides of the container 1 and are used for generating standing waves in the wastewater in the cavity so as to enable solid matters in the wastewater to move along with the standing waves to realize sedimentation.

On the basis of the structure, the waste water can enter the containing cavity from the water inlet of the container 1 and flow out from the water outlet, and the self-flow of the waste water can be realized. The two vibrating devices are started to generate two lines of waves with the same frequency, amplitude and vibration directions and the opposite propagation directions, the two lines of waves are intersected to form standing waves, when wastewater flows through standing waves generated by the two vibrating devices, solid matters in the wastewater can stay at node antinodes of the standing waves, and the solid matters are settled along with the wave motion of the standing waves, so that the continuous separation of the solid matters such as sludge, flocs and the like can be realized, and the reduction of water treatment cost and energy consumption is facilitated.

As a preferred embodiment of the present invention, it may also have the following additional technical features:

in this embodiment, two vibrating devices are respectively disposed on two opposite sides of the container 1, specifically, one vibrating device is fixed on an outer side wall of the container 1, the other vibrating device is movably disposed in the cavity of the container 1, and the vibrating device in the cavity can move toward a direction close to or away from the vibrating device on the outer wall of the container 1 to adjust the distance between the two vibrating devices, so that the phase difference between the two rows of waves can be adjusted, a standing wave can be effectively generated in the cavity of the container 1, and effective separation of solids is facilitated.

In other embodiments, the two vibrating devices are respectively disposed on two opposite sides of the container 1, specifically, one vibrating device is fixed on an inner side wall of the container 1, and the other vibrating device is movably disposed in the cavity of the container 1, or both vibrating devices are movably disposed in the cavity of the container 1.

In this embodiment, this solid settlement device still includes water stop device 4, and water stop device 4 mobilizable setting is provided with water separating groove in the appearance intracavity of container 1 on water stop device 4, and water separating groove is used for acceping the vibrating device who is located the appearance intracavity of container 1, can do benefit to and prevent to hold the vibrating device of intracavity and intake, can effectively adjust two vibrating device's interval again in order to guarantee that the appearance intracavity of container 1 can produce the standing wave.

In this embodiment, the solid settling device further includes a guiding member, the guiding member is disposed in the cavity of the container 1, and the vibrating device located in the cavity of the container 1 is movably connected to the guiding member to adjust the distance between the two vibrating devices, so that the vibrating device can move in the cavity of the container 1 along the guiding member, and a better guiding effect is achieved for the movement of the vibrating device.

As a preferred embodiment, the solid settling device further comprises a limiting member, the vibration device located in the cavity of the container 1 is in threaded connection with a guide member through the limiting member, so as to adjust the distance between the two vibration devices, specifically, the guide member is a screw rod 5, the limiting member is a nut 6, and the vibration device is in threaded connection with the screw rod 5 through the nut 6. Therefore, the precise movement of the vibration device in the accommodating cavity can be facilitated, and the adjusting efficiency of the distance between the two vibration devices is improved.

In other embodiments, the guiding element may be a sliding rail, and the limiting element may be a sliding block, and the sliding block may slide on the sliding rail.

In the container 1 of this embodiment, the level of delivery port is greater than the level of water inlet, even the flow of waste water is into going up and out from down, can do benefit to the region that makes the solid can pass through the standing wave completely, can do benefit to the discharge of its appearance intracavity air of container 1 simultaneously, can avoid the short-term stream again, does benefit to the abundant settlement of solid.

When the container is specifically implemented, the water inlet is provided with the water inlet pipe 2, and the water outlet is provided with the water outlet pipe 3, so that the conveying of water flow is facilitated, and the water flow can effectively enter and exit the containing cavity of the container 1.

In a more preferred embodiment, the solids settling device further comprises sound insulation means for covering the entire surface of the vessel 1, which is advantageous for reducing the noise generated by the vibration of the respective vibration means.

In other embodiments, the acoustic insulation may also cover only the surfaces of both vibrating devices, or both the container 1 and the surfaces of both vibrating devices. Of course, the acoustic insulation may also cover the inner side wall of the water barrier 4 where the vibration device is located. Thus, noise reduction can be facilitated.

In this embodiment, the sound insulation device is sound insulation cotton, which can achieve a better noise reduction effect.

In other embodiments, the acoustic barrier may be sound insulating glass, sound insulating panels, or the like.

In this embodiment, each of the vibration devices is an ultrasonic transducer 7, and the released vibration frequency and energy can facilitate the effective generation of standing waves in the cavity of the container 1.

In the embodiment, the solid matter settling device further comprises a high-voltage booster 8 for regulating voltage, a power amplifier 9 for regulating power and an ultrasonic generator 10 for driving the ultrasonic transducers 7 to operate, and each ultrasonic transducer 7 is respectively and electrically connected with the high-voltage booster 8, the power amplifier 9 and the ultrasonic generator 10 in sequence. Thus, each ultrasonic transducer 7 is externally connected with a high-voltage booster 8, a power amplifier 9 and an ultrasonic generator 10, namely, a signal generator with a double-channel function and a power amplifier 9 with a double-channel output are used in a matching way, and the high-voltage booster 8 is connected to the rear of the ultrasonic transducer 7 finally. When the ultrasonic wave generator 10 is used, parameters of the ultrasonic wave generator 10 include frequency, output amplitude, phase, duty ratio, waveform and the like, and when the output amplitude is adjusted, the excitation voltage output to the ultrasonic transducer 7 needs to be adjusted, so that standing waves can be effectively generated in the cavity of the container 1, and the separation of solid matters can be continuously performed. In specific implementation, the parameters of the ultrasonic generator 10 can be edited to separate the wastewater to different degrees, and the separation speed is high.

In other embodiments, each vibration device may be a mechanical vibration component such as a vibration motor.

In this embodiment, the container 1 is made of stainless steel, and the ultrasonic transducer 7 is a ceramic piezoelectric plate, which is beneficial to effectively generate standing waves in the water flow in the cavity. Two ultrasonic transducer 7 glue respectively on an lateral wall of container 1 and the inside wall of water stop 4 through glue, and just to arranging about two ultrasonic transducer 7, the installation of being convenient for can do benefit to and effectively produce the standing wave in the appearance intracavity of container 1.

The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.

The preferred embodiment of the present invention also provides a method for settling solids, comprising the steps of:

1) preparing a wastewater sample;

2) forming a wastewater sample into a water flow flowing in one direction;

3) standing waves are generated in water flow, when solid in the wastewater sample passes through a standing wave area, the solid can stay at a node antinode of the standing waves, and the solid can realize sedimentation along with the wave motion of the standing waves.

In this embodiment, the effective volume of the container 1 is 2100mL, the whole is made of stainless steel 304, the ultrasonic transducer 7 is a ceramic piezoelectric plate with power of 35W and frequency of 43kHz, the ultrasonic generator 10 and the power amplifier 9 are both provided with dual-channel output, and the voltage of the high-voltage booster 8 is raised to 200-600 v.

After the two ultrasonic transducers 7 are installed, it is also necessary to correct the distance between them or adjust the phase difference between the positive and negative waves, because the positive and negative waves with the same frequency need to be in this state to generate standing waves. The process of correcting the distance is to turn on the ultrasonic generator 10 and the power amplifier 9, set the frequency at 43kHz, gradually increase the output amplitude, and then manually adjust the position of the nut 6 on the screw rod 5 to enable the water-resisting groove to move towards the left and the right; or the phase of a series of waves is adjusted on the ultrasonic generator 10, the condition of the wastewater in the container 1 is observed during each adjustment, the ultrasonic generator 10 and the ultrasonic transducer 7 are usually started to generate cavitation effect in the water, bubbles can be seen to appear, and when standing waves are formed during the adjustment, the cavitation holes can be reduced, and the amount of the bubbles is reduced.

After the solid settling device is started, the ultrasonic generator 10 starts the phase of the circulating wave, the wastewater containing the solid enters the container 1 of the container 1 from the water inlet at the bottom, the solid stays in the node antinode when passing through the area of the standing wave, and because the phase moves towards the direction of the ultrasonic transducer 7 at the left side integrally in the continuous circulating process, the floc moves along with the movement and settles down; since the ultrasonic transducers 7 are installed in such a manner that the two ends face each other, the same frequency and amplitude, and different phases need to be input thereto, and the waveform needs to be shifted to the left, so that the phase of the left ultrasonic transducer 7 is circulated in the reverse direction, and the phase of the right ultrasonic transducer 7 is circulated in the forward direction.

The solids settling experiments for the preferred embodiment of the invention are as follows:

preparing three 2000mL water samples of the ink wastewater, wherein the initial pH value is 7-8, adding 20mL PAC with the concentration of 10% into each water sample, stirring, generating floc precipitation, and standing for 40-60 seconds for basic precipitation on average, namely needing the water sample with slower precipitation rate and part of suspended non-precipitated or slowly precipitated floc;

in the first embodiment, tap water is filled in the container 1, the ultrasonic generator 10 is not required to be started, a wastewater sample is uniformly and slowly poured into the container 1 from a water inlet, the rising flow rate in the container 1 is controlled to be 0.5 mm/s, and whether flocs flow out of a water outlet or not is observed;

example two, the wastewater in the container 1 is changed into clear water, the ultrasonic generator 10 is started, a wastewater sample is prepared again and poured uniformly and slowly, the same flow rate is controlled, and whether floc flows out or not is observed;

in the third example, the wastewater in the container 1 is replaced by clear water, the ultrasonic generator 10 is started, the phase cycle is started, the wastewater sample is prepared again and poured uniformly and slowly, the same flow rate is controlled, and whether floc flows out or not is observed;

after 1000mL of water is poured into the test at least, continuously taking 2 parts of 400mL of water sample as an inspection sample, and for convenience of statistics, representing the amount of flocs contained in the water sample by using the number of filter paper, wherein the smaller the number of the filter paper, the fewer the flocs;

	the amount of filter paper used for the 1 st water sample	The amount of filter paper used for the 2 nd water sample
			First test	6	7
Second test	4	4
			Third test	1	1

From the data, the suspended solid in the water can be settled and intercepted by using the ultrasonic standing wave for settling on the wastewater treatment, so that the problem of the solid in the water can be solved.

In conclusion, the invention changes the position of the solid substance staying on the node antinode in the water through the phase of the circulating standing wave, so that the solid substance mixed in the wastewater can be subjected to the migration along with the standing wave, and the aim of separating the solid substance is fulfilled. The invention has the advantages that the wastewater can be separated to different degrees by editing parameters, and the separation speed is high.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (10)

1. A solids settling device, comprising:

the waste water treatment device comprises a container (1), wherein a containing cavity for containing waste water is arranged on the container (1), a water inlet and a water outlet are arranged on the container (1), and the water inlet is communicated with the water outlet through the containing cavity;

the two vibration devices are respectively arranged on two opposite sides of the container (1) and are used for generating standing waves in the wastewater in the accommodating cavity.

2. The solids settling apparatus of claim 1, wherein: at least one vibration device is movably arranged in the containing cavity of the container (1) and can move towards the direction close to or far away from the other vibration device so as to adjust the distance between the two vibration devices.

3. The solids settling apparatus of claim 2, wherein: the water-resisting device is characterized by further comprising a water-resisting device (4), wherein the water-resisting device (4) is movably arranged in the containing cavity of the container (1), a water-isolating groove is formed in the water-resisting device (4), and the water-isolating groove is used for containing a vibrating device located in the containing cavity of the container (1).

4. The solids settling apparatus of claim 2, wherein: the vibration device is characterized by further comprising a guide piece, wherein the guide piece is arranged in the containing cavity of the container (1), and the vibration device positioned in the containing cavity of the container (1) is movably connected with the guide piece so as to adjust the distance between the two vibration devices.

5. The solids settling apparatus of claim 4, wherein: the vibration device is positioned in the containing cavity of the container (1) and is in threaded connection with the guide piece through the limiting piece, so that the distance between the two vibration devices can be adjusted.

6. The solids settling apparatus of claim 1, wherein: the horizontal height of the water outlet is greater than that of the water inlet.

7. The solids settling apparatus of claim 1, wherein: also included are sound-insulating means for covering the surface of the container (1) and/or of the respective vibration means.

8. The solids settling apparatus of claim 1, wherein: each vibration device is an ultrasonic transducer (7).

9. The solids settling apparatus of claim 8, wherein: the ultrasonic transducer comprises a high-voltage booster (8), a power amplifier (9) and an ultrasonic generator (10), wherein each ultrasonic transducer (7) is respectively and sequentially electrically connected with the high-voltage booster (8), the power amplifier (9) and the ultrasonic generator (10).

10. A method of settling a solid, comprising the steps of:

1) preparing a wastewater sample;

2) forming a wastewater sample into a water flow flowing in one direction;

3) standing waves are generated in water flow, when solid in the wastewater sample passes through a standing wave area, the solid can stay at a node antinode of the standing waves, and the solid can realize sedimentation along with the wave motion of the standing waves.

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